通过Jedis再次理解事务

正常执行

public class TestTx {
    public static void main(String[] args) {
        Jedis jedis = new Jedis("127.0.0.1", 6379);

        JSONObject jsonObject = new JSONObject();
        jsonObject.put("hello", "world");
        jsonObject.put("name", "hejin");

        // 开启事务
        Transaction multi = jedis.multi();
        String result = jsonObject.toJSONString();

        try {
            multi.set("user1", result);
            multi.set("user2", result);

            // 执行事务
            multi.exec();
        } catch (Exception e) {
            // 放弃事务
            multi.discard();
            e.printStackTrace();
        } finally {
            System.out.println(jedis.get("user1"));
            System.out.println(jedis.get("user2"));

            // 关闭连接
            jedis.close();
        }

    }
}

{"name":"hejin","hello":"world"}
{"name":"hejin","hello":"world"}

有错误代码

public class TestTx {
    public static void main(String[] args) {
        Jedis jedis = new Jedis("127.0.0.1", 6379);

        jedis.flushDB();

        JSONObject jsonObject = new JSONObject();
        jsonObject.put("hello", "world");
        jsonObject.put("name", "hejin");

        // 开启事务
        Transaction multi = jedis.multi();
        String result = jsonObject.toJSONString();

        try {
            multi.set("user1", result);
            multi.set("user2", result);

            // 代码抛出异常,事务执行失败
            int i = 1/0;

            // 执行事务
            multi.exec();
        } catch (Exception e) {
            // 放弃事务
            multi.discard();
            e.printStackTrace();
        } finally {
            System.out.println(jedis.get("user1"));
            System.out.println(jedis.get("user2"));

            // 关闭连接
            jedis.close();
        }

    }
}

java.lang.ArithmeticException: / by zero
	at com.kuang.TestTx.main(TestTx.java:31)
null
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